old_trunk/protocol-ldap/src/main/java/org/apache/directory/server/ldap/handlers/DefaultAbandonHandler.java

/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
 *  with the License.  You may obtain a copy of the License at
 *  
 *    http://www.apache.org/licenses/LICENSE-2.0
 *  
 *  Unless required by applicable law or agreed to in writing,
 *  software distributed under the License is distributed on an
 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *  KIND, either express or implied.  See the License for the
 *  specific language governing permissions and limitations
 *  under the License. 
 *  
 */
package org.apache.directory.server.ldap.handlers;


import org.apache.directory.shared.ldap.message.AbandonRequest;
import org.apache.directory.shared.ldap.message.AbandonableRequest;
import org.apache.directory.shared.ldap.message.Request;
import org.apache.mina.common.IoSession;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;


/**
 * Handler for {@link AbandonRequest}s.
 *
 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
 * @version $Rev$
 */
public class DefaultAbandonHandler extends AbandonHandler
{
    private static final Logger LOG = LoggerFactory.getLogger( AbandonHandler.class );

    /** Speedup for logs */
    private static final boolean IS_DEBUG = LOG.isDebugEnabled();

    
    public void abandonMessageReceived( IoSession session, AbandonRequest req ) throws Exception
    {
        int abandonedId = req.getAbandoned();

        if ( abandonedId < 0 )
        {
            return;
        }

        Request abandonedRequest = getSessionRegistry().getOutstandingRequest( session, abandonedId );

        if ( abandonedRequest == null )
        {
            if ( LOG.isWarnEnabled() )
            {
                LOG.warn( "Got abandon request from client " + session + " but request must have already "
                    + "terminated.  Abandon request " + req + " had no effect." );
            }
            return;
        }

        if ( abandonedRequest instanceof AbandonableRequest )
        {
            LOG
                .warn( "Abandon, Bind, Unbind, and StartTLS operations cannot be abandoned.  Abandon request will be ignored." );
        }

        ( ( AbandonableRequest ) abandonedRequest ).abandon();
        if ( getSessionRegistry().removeOutstandingRequest( session, abandonedId ) == null )
        {
            if ( LOG.isWarnEnabled() )
            {
                LOG.warn( "Got abandon request from client " + session + " but request must have already "
                    + "terminated." );
            }
        }
        else
        {
            if ( IS_DEBUG )
            {
                LOG.debug( "Abandoned request:  ", req );
            }
        }
    }
}